Elastic trailer for motor cars



1 1927. Y Oct l H. D. HALLENBERG ET AL ELASTIC TRAILER RoR MOTOR cARs Filed June 11,l 1925 u ...JIHHMHJJH l I...1

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Patented Oct. 1 1, 1927.

UNITED sTATlazs HARRY DANIEL HALLENBERG AND ARMAS FREDRIK HYN-NINEN, OF TAMMISUO,

FINLAND. l

ELASTIC TRAILER FOR MOTOR CARS.

Application led June 11, 1925, Serial No. 36,466, and in Finland June 19, 1924.

This invention relates to improvements in trailersfor motor cars; and 1t has for its object the provision of a construction which,

scribed with reference to the accompanying drawing, wherein:

Figure 1 is a substantially-central, longitudinal sectional view ot a motor car and trailer;

Fig. 2 is an end view of Fig. 1;

Fig. 3 is a partial top view ot Fig. 1;

Fig. f1 is a diagram showing the position of the principal parts when the center of the trailer wheel is above the line connecting the centers of the front and back wheels of the motor car; and

Fig. 5 is a similar diagram showing the position of the principal parts when the center of the trailer wheel is below the line connecting the centers of the `front and back wheels of the motor car.

Referring to Fig. 1, the trailer frame .is drawn by the heads 1 and 2, of which the head 1 is fastened to the motor car trame and forms one rigid piece with it, the trailer frame being turnable around this head 1. The head 2 extends across the entire width of the trailer frame and is connected to the axle 11 ot the trailer wheels 12 by means ot the springs 13 shown in Fig. 9.. The heads 1 and Q. are kept constant distance apart by the trailer frame; and in order to obtain a steadier connection they may also be joined together by a pole 14 which has its ends articulated to them at 9 and 8.

Below the pole 14 there is arranged a lower connection, comprising a reach or draw-bar 15 having its rear end jointed at 4f to the trailer axle 11 and its front end `jointed at 3 to the motor car :trame or chassis immediatelybeneath the head 1; said reach being further connected by diagonal braces 20 to the trailer axle 11. Due to this arrangement, the line 1-3 is always disposed perpendicularly to the 'line that connects the centers of the front and rear axles 16 and 17 ot the motor car (Figs. 1 and 5) and sinceV the trailer axle 11 is connected to joint 3 by the aforesaid reach 15 and braces 20, and the heads 1 and 2 are kept a constant distance apart, as already stated, the line 1-3 will always be parallel with the line 2-4 even if the wheels 18 and 19 ot the motor car and the wheels 12 of the trailer are on different levels. Finally, in addition to the diagonal braces 20 there is employed an inclined brace rod 5, arranged in the vertical plane of the reach 15, which acts to keep the carrier trame ot the trailer in an upright position when they trailer is unconpled from the motor car. When the wheels 12 of the trailer move vertically in respect to the wheels 18 and 19 of the motor car, the end of this rod 5 will slide in the hole in the lug or projection 7, the connection of the rod 5 to the lug being permitted by means of a spring 6.

The head 1 may he arranged, as shown in Fig. 1, behind or in the rear oi the vertical plane which passes through the rear axle 17 of the car, or it may b-e positioned in front of or directly above said axle, depending on the distribution of the load relative to the front and rear axles of the car.

le claim as our invention:

1. A trailer fory tractors and other vehicles, comprising a wheeled axle; a head supn ported on and connected with the axle; a head fastened to the rear end of the tractor frame; a reach articulated at its rear end to said axle and detachably jointed at its front end to the rear axle of the tractor; and a pole located above and parallel with the reach and articulated at its rear end to the trailer head and detachably jointed at its front end to the tractor head, said detach able joints enabling the trailer to swing laterally and to move vertically relativelyto the tractor.

2. A trailer for tractors and othervehi cles, comprising a wheeled axle; a head sup-v ported on and connected with the axle; a

head fastened to the rear end of the tractork and articulated at its rear end to the trailer said reach at its front end, the rear end of head and detaclnloly jointed at its front end the brace having a Sliding, spring-controlled tothe tractor head, said detachable join-ts connection with Said trailer heaeL '1" enabling the trailer to swing laterally and In testimony whereof:l We have alixed our to move vertically relatively to the tractor; signatures. f

and an inclined brace disposed alcove the HARRY DANIELHLLENBERG. reach in the plane thereof and articulated to ARMAS FREDRIK HYNNINEN. 

